Komatsu America Corp. introduces the new WD600-6 wheel dozer equipped with a Tier III-compliant engine. The 108,280-lb WD600-6 is designed to work with either a straight blade or U blade in many applications. It offers improved productivity, lower fuel consumption and increased reliability. The WD600-6 is powered by a Komatsu Tier III, SAA6D170E-5 six-cylinder engine, which produces 502 hp at 1,800 rpm, a significant increase in horsepower over the previous model.